Yes, tungsten needles can be used for microscale dielectrophoresis. Dielectrophoresis is a technique that uses non-uniform electric fields to manipulate and separate particles based on their dielectric properties. Tungsten needles can be used as electrodes to generate these electric fields in microfluidic devices. The sharp tip of tungsten needles allows for precise control and localization of the electric field, which is essential for effective manipulation of micro- and nanoscale particles. Additionally, tungsten has high electrical conductivity, which is important for efficient and accurate generation of the electric field.
